Based on the data obtained during the 15th Antarctic Expedition of China between November 1998 and February 1999,the paper discusses the water masses distribute
A new method of improving speed of latch-type comparators with preamplifier is presented. It investigates the relationship of current and transistor scales whic
【正】Uranium is a typical lithophile element, having outstanding geo-chemical characteristics of association whith high SiO<sub>2</sub>, peraluminousand margin
In order to solve the problem that the existing meshless models are of high computational complexity and are difficult to express the biomechanical characterist